Improvement in processes of preparing lithographic transfers



ITNITED STATES PATENT OFFICE.

FREDERICH REIF AND ROBERT M. AREY, OF CINCINNATI, OHIO, ASSIGN- ORS TO THEMSELVES AND CRANE, BREED & CO., OF SAME PLACE.

IMPROVEMENT IN PROCESSES 0F PREPARING LITHOGRAPHIC TRANSFERS.

Specification forming part of Letters Patent No. 153,610, dated July 28, 1874; application filed February 9, 1874.

To all whom it may concern Be it known that we, FREDERIGH REIF and ROBERT M. AREY, both of Cincinnati, Hamllton county, State of Ohio, have invented a cerof a process of transferring which does not require the previous sizing, varnishing, oiling, or moistening of the surface of the material to be grained or otherwise ornamented; and our invention consists of a peculiar process in Which, as heretofore, paper is used to receive and convey the figure to the material to be grained or ornamented, but in which lithography, with a peculiar adhesive character of ink, is used to make the design, figure, or ornament, and in which process the paper is so prepared by the application of a peculiar sizing to it before it receives the lithographic design that it has the quality of easy solubility to permit the free transfer of the print.

Our process is as follows: The design for the graining or ornament is first drawn on lithographic stone, and the ink used to transfer this design to the prepared paper is composed as follows: Lithog'raphic ink, (Wades or other brand,) one pound; copal varnish, one ounce; linseed-oil, onehalf ounce. The ink so composed will have the requisite degree of fatness, and possess the quality of adhesiveness, when moistened and separated from the paper, sufficient to cause it to attach itself in a tacky manner to an unprepared surface of metal or wood. The paper to receive the impression from the stone is previously prepared by a coating of sizing composed of the following ingredients: A solution of gamboge and water in the proportion of one ounce of gamboge to two ounces of water, two ounces; refined starch, two ounces; tincture of cochineal, five minii'ns Water, one quart. Mix well, bring to a boil, and when cold use.

In making the transfer we take the paper prepared and printed in the manner described, and then moisten the back of it with a solution of water, one gallon concentrated acetic acid, one ounce. We then lay the printed surface upon the'surfacc to receive the grain or other figure, which surface may have been previously painted with any color desirable, and by the pressure of a rubber roller, or other pressure device, we succeed in detaching the ink from the paper, and transfer the same to the surface to receive it, the moisture serving to render the size soluble, so as to permit very easy separation, and the adhesive or tacky character of the ink being sufficient to effect the separation and complete the transfer.

We claim The herein-described process of transferring lithographic designs to metal or other surfaces-that is to say, first taking an impression from the stone, in lithographic ink mixed with copal varnish and linseed-oil, upon paper coated with a sizing composed of a solutionof gamboge, refined starch, and tincture of cochineal, and then, after treatment of the paper so printed with a solution of acetic acid, transferring the design to the surface to be orna mented, all substantially as specified.

In testimony of which invention We hereunto set our hands.

- FREDERICH REIF.

S. MQRSE. 

